From: Daniel Borkmann <dborkman@redhat.com>
Date: Mon, 25 Mar 2013 19:27:23 +0000 (+0100)
Subject: trafgen: parser: add possibility for negative numbers
X-Git-Tag: v0.5.8-rc1~409
X-Git-Url: https://repo.or.cz/w/netsniff-ng.git/commitdiff_plain/48cdbcaea2a826688ec9fb4df1af2cfb38352f9b

trafgen: parser: add possibility for negative numbers

The previous commit reduced it, so now we allow it within cX() containers
in order to negate a result, if someone needs that.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
---

diff --git a/trafgen_parser.y b/trafgen_parser.y
index b0e7e338..37c9a156 100644
--- a/trafgen_parser.y
+++ b/trafgen_parser.y
@@ -431,6 +431,8 @@ expression
 		{ $$ = $1 << $4; }
 	| expression '>' '>' expression
 		{ $$ = $1 >> $4; }
+	| '-' expression
+		{ $$ = -1 * $2; }
 	| '(' expression ')'
 		{ $$ = $2;}
 	;